package com.gujia.concurrency.example.atomic;

import com.gujia.concurrency.annoations.ThreadSafe;
import lombok.extern.slf4j.Slf4j;

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Semaphore;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicLong;

@Slf4j
@ThreadSafe
public class AtomicExample2 {
    
    //请求总数
    public  static  int clientTotal = 5000;
    
    //同时并发执行的线程数
    public static int threadTotal = 200;
    
    public static AtomicLong count = new AtomicLong();
    
    public static void main(String[] args) throws Exception {

        ExecutorService executorService = Executors.newCachedThreadPool();

        final Semaphore semaphore = new Semaphore(threadTotal);
        final CountDownLatch countDownLatch = new CountDownLatch(clientTotal);
        
        for (int i = 0 ; i<clientTotal;i++){

            executorService.execute(()->{
                try{
                    semaphore.acquire();
                    add();
                    semaphore.release();

                }catch (Exception e){
                    //log.error("exception",e);
                    e.printStackTrace();
                }

                countDownLatch.countDown();
            });

        }

        countDownLatch.await();
        executorService.shutdown();
        System.out.println("count:"+count.get());

    }

    private static void add() {

       // count.incrementAndGet();
        count.getAndIncrement();
    }
}
